问题
名词解释
血浆
答案
参考答案：
是血液的细胞间液，除去血细胞后的液体。
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血浆
参考答案：
是血液的细胞间液，除去血细胞后的液体。
| 从对话后的选项中选择适当的选项补全对话，把相应的字母番号填在方框下面的横线上。 | |
| (Doctor=D, Woman=W) D: Good morning. What's your trouble? W: I don't feel very well. D: 1______ W: Yes, I have. My temperature is a little higher. D: Open your mouth and say,"Ah". W: Aahh. D: 2______ W: Ever since last night. D: Did you sleep well? W: No. I was very tired last night. D: Oh, I see. 3______ W: Can you tell me how I got a cold? D: Maybe you are too tired. W: I think so. I have too much work to do every day. Do I have to stay at home? D: Yes. You'd better stay at home for two or three days. W: 4______ D: No, I don't think so. But you really need a good rest and take the medicine. W: 5______ D: Three times a day. W: OK. Thank you.
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.当第二个物体开始下落时,两物体相距（ ）
